[pypy-issue] [issue1618] PyPy 5x slower than CPython on benchmark

Alex Gaynor tracker at bugs.pypy.org
Fri Oct 4 20:23:33 CEST 2013

New submission from Alex Gaynor <alex.gaynor at gmail.com>:

This seems to be as a result of `pow()` on longs being slower. To reproduce:

get the code from https://github.com/dstufft/ed25519/pull/1

and run: `time python -u signfast.py < sign.input`, for me it takes about 16 
seconds on CPython, and about 80 seconds under PyPy.

messages: 6242
nosy: agaynor, pypy-issue
priority: performance bug
status: unread
title: PyPy 5x slower than CPython on benchmark

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